Transverse underframe structure for cars.



2 SHEETS-SHEET l.

PATENTED MAR. 5, 1907.

A'I'RANSVERSE UNDERFRAMB STRUCTURE FOR CARS lr'uvrENTBDA MAR. 5, 190,7.

` E. 1. nouns. TRANSVBRSB UNDERFRAME STRUCTURE FOR GARS.

APPLICATION FILED SBPT.18. 1905.

2 SHBETS--SHEET 2.

1HE Nrmms PETERS ca., wAsHlNcwN, n.-c,

NITED STATES PATENT FFIE.

ETHAN I. Donne, or PULLMAN, ILLINOIS, ASSICNOR To THE PULLNIAN COM PANY, or CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

Specification of Letters Patent.

Patented March 5, 1907.

Application led September 18, 1905. Serial No. 278,934.

To all whom it may con/cern,.-

Be it known that I, ETHAN I. DoDns, a citizen Of the United States, residing at Pullman, in the county of Cook and Stateof Illinois, have invented certain new and useful Improvements in Transverse Underframe Structures for Cars, of which the following is a specification.

In order to make a metallic car-bolster or cross-bearer with a flanged and tapered top or bottom plate which Wil be proportioned to most effectually withstand the strains to which it may be subjected, which will be supported some distance above or below the transverse beams and at the same time use parts of standard size and shape, I have developed the present invention, an approved embodiment of which is represented by the structure illustrated in the accompanying drawings and described below.

To the center sills of the car I attach one or more comparatively short sections of a pressed or rolled bar, and for the top or bottom plate to be riveted to this bar or bars and to the transverse beams of the structure I use a rectangular sheet of metal, leaving the same of full width at its central portion, which is to be attached to the bar or bars and bend over tapered and normal or uniform flanges along the intermediate and end por. tions ofthe sheet, respectively. By so doing I construct a plate widest at its central portion and tapered toward its comparatively narrow end portions, which are riveted to the transverse beams, the intermediate and end portions having integral flanges along their side edges.

In the accompanying drawings I have illustrated three forms of my invention, Wherem Figure 1 isa horizontal section of the car illustrated in Fig. 2 on line l 1 looking downwardly. Fig. 2 is a vertical transverse sec-` tion of the car on line 2 2 of Fig. 1 as viewed in the direction indicated by the arrows. Fig. 3 is a cross-section similar to that illustrated in Fig. 2, showing a modified structure; and Fig. 4 is a fragmentary Section of another modified construction.

The channel center sills 10 10 are spaced apart and tied together at intervals at the points Where the cross-bearers and bolsters are attached thereto by the pan-shaped members 11. Angle-bars 12 secure the inner ends of channel-bars 13, which may comprise the cross-bearers or bolsters of the car, to the center sills mentioned above, the outer ends of the beams 13 being fastened to the channel side sills 14 by angle-plates 15. Rivets 12a, which fasten angle-plates 12 to the center sills, pass also through the flanges of panshaped members 11 and secure the same in place, while the rivets 15a, which attach the angle-plates 15 to the side sills, hold the side stakes 16 in position by passing through their flanges. Additional rivets 15a, as shown in Fig. 1, also hold the flanges of the side stakes to the side sills. Longitudinal wooden beams or stringere 17 rest upon the cross-bearers and body-holsters and are attached thereto in any approved manner, the floor-planks 18 being fastened to these beams, while the side planks 19 and the end planks 20 are bolted or otherwise secured to the side and end stakes. Adjacent to the attachment-point of each cross-bearer or body-bolster to, the center sills there is provided in the construction illustrated in Figs. 1 and 2 a short channel section or spacer 21, one of whose flanges is riveted to the lower flanges of the center sills and to the lower flange ofthe adjacent spacer or pan shapd member 11. Riveted to the lower flangeof the channel-bar 21, as shown in Fig. 2, and to the lower flanges of the transverse channel-beams 13 is a supporting plate or brace 22, having horizontal central and end portions 23 and 24, respectively, the former being fastened to the lower flange of channel member 21 and the latter to the lower flanges of beams 13. Plate 22 also has intermediate inclined portions 25, the end portions 24 and inclined portions 25 having on each of their side edges normal or uniform and tapered flanges 26 and 27, respectively. Plate 22 is most economically manufactured by bending over integral flanges along the end portions of the side edges of a rectangular plate, thus making the plate widest at its central part and tapered toward both ends, and also pressing the plate into shape, so that it will have the horizontal and inclined portions shown in the drawing and described above.

It will be apparent that the channel-section 21 constitutes a spacing member and that by securing the compression-plate 22 to the member 21 some distance below the lower edges of beams 13 I secure a most efl- IOO cient form of support for the transverse beams of the car.

In Fig. 3 I have shown a modification Which is in many respects similar to the construction shown in Fig. 2; but it differs from the latter in that the spacer or support 21' is attached to the upper flanges of center sills 10 and constitutes also a strut. Passing over strut 21', secured thereto and also to the upper fianges of the transverse beams 13, is a plate 22', having a top horizontal central portion 23', intermediate downwardly-inclined portions 25', and end horizontal portions 24', the latter being riveted to the top flanges of the transverse beams 13 and being provided with integral uniform flanges 26' along their side edges, the same straddling the transverse beams. The inclined portions 25' have integral tapered flanges 27', as is clearly shown in Fig. 3. Plate 22' is constructed from a rectangular sheet of metal in much the same manner that the plate 22 (shown in 'Fig 2) is manufactured. By placing the strut 21 above the channel center sills and attaching the tension-plate 22' to the top surface thereof the latter acts as an eicient means for supporting the transverse beams in position and preventing their deflection.

The modified construction shown in Fig. 4, Which is a longitudinal vertical section through a cross bearer or bolster adjacent to the center still 10, involves the use of two channel members 21a, riveted to the top or bottom flanges of the center sills and a compression or tension plate, like plate 22 of Fig, 2 or plate 21' of Fig. 3, according to Whether the same is used below or above the center sills. It should be understood that the ends of plate 22a are secured to the transverse beams 13, of which only one is shown in Fig. 4.

Although I have shown the compression and tension plates as having flanges along portions of their edges, they can be used, nevertheless, Without such stiffening-flanges. It Will also be apparent that I may equip the transverse beams With both tension and compression plates of the character shown and described if the Weight to be imposed on the car-frame Warrants the use of such strengthening means. Instead of using channelbeams, as described above, I may employ other beams or bars of standard shape.

Other minor mechanical changes may be made in a structure of this character Without departing from the essence of my invention as set forth in the appended claims.

This patent is intended to embrace only so much of the disclosure made herein as is covered by the claims.

I claimn y 1. In a construction of the character described, the combination of center sills, transverse beams, a spacing member secured to said center sills, and a plate having horizontal central and end portions and inclined intermediate portions, the center horizontal ortion being secured to said spacing memer, and the end horizontal portions being secured to said transverse beams, substantially as described.

2. In a construction of the character described, the combination of center sills, transverse beams, a spacing member secured to said center sills, and a plate having horizontal central and end portions and inclined intermediate portions, the center portion being secured to said spacing member and the end portions being secured to said transverse beams, said plate having flanges along the side edges of its horizontal end and inclined intermediate portions, substantially as described.

3. In a construction of the character de scribed, the combination of center sills, transverse beams, a spacing member secured to said center sills, and a plate Widest at its centralpart and tapered toward its ends, said plate having horizontal central and end portions and inclined intermediate portions, the central portion being secured to said spacing member and the end portions being secured to said transverse beams, substantially as described. y

4. In a construction of the characterdescribed, the combination of flanged center sills, flanged transverse beams, a spacing member having fianges on its opposite edges, one of said flanges of said spacing member being secured to the flanges of said center sills, and a plate Widest at its central portion and tapered toward its ends having horizontal central and end portions and inclined intermediate portions, said central portion being secured to the other flange of said spacing member, said end portions being secured to the flanges of said transverse beams, said plate having integral uniform flanges along .the side edges of its horizontal end portions and integral tapered flanges along the side edges of its intermediate inclined portions', substantially as described.

ETHAN I. DODDS. Witnesses:

FREDERICK C. GOODWIN, WALTER M. FULLER.

TOO 

